Monochromatic Crayon

Monochromatic Crayon (モノクロのクレヨン) is the tenth episode of Iroduku: The World in Colors. It premiered on December 8, 2018.

Synopsis
Asagi and Hitomi reconcile eating parfaits together. For the next round of club activities, Kohaku decides to use magic to bring the students coming to see the Photography & Art Club's anthologies into the photos and pictures, but halfway back home reveals to Hitomi that she'll be the one casting the magic instead. Wanting to let everyone experience the same bright and colorful scenes, Hitomi practices relentlessly during club and back at home with paper airplanes and Kohaku's photos of England. After having mastered the magic to last for 3 minutes, the club members enter one of Aoi's drawings depicting a fantasy world, where Aoi and Hitomi encounter the golden fish once again. The two follow it into the darkness but Aoi soon realizes that Hitomi is missing, with a statue of her turned into stone in front of him next to a heavy bamboo door. Upon opening it, he witnesses a young Hitomi drawing with monochromatic colors a river dividing a crying princess and queen, which he attempts to brighten up by drawing a boat, a bird and later a rainbow bridge for the princess to cross, but Hitomi rejects them all. Returning to the present, Hitomi decides to tell Aoi about her past: her mother was the first of the Tsukishiro kind to be unable to use magic, instead giving birth to a daughter who could. One day, her mother left and from there Hitomi always believed that it was a punishment for her to be happy with her ability but being unable to notice her mother's sorrow and make her happy again, therefore believing that magic was something that tore at their relationship and leading to its hatred.